David Tennant tells a Knock Knock joke. David Tennant tells a Knock Knock joke when hosting a Dr. Who themed "Never Mind the Buzzcocks" episode. Cathe dr who David Tennant buzzcocks knock knock Never Mind the B Wilfred Mott
Blew my mind: Apparently the adventurous Tommy Pickles was based off the Doctor.and he always had his screwdriver. (The creators of Rugrats were huge fans!) Also, there are Daleks in the background behind Chuckie here.